This alcohols tester is intellectualized design, adopts high sensitive chip and intelligent semiconductor sensors for more accurate measurement. Non-contacting blowing design which avoids the breeding of bacterium in the blowpipe, quick troubleshooting without pipeblowing and make the measurement healthier. Equipped with three color detection indicators, the test results are clear at a glance, red represents drunken state, yellow represents drinking state, green represent non-drinking state. Features: Made of ABS material, compact size, light weight and portable, easy to take out and carry around with you. Intellectualized design, adopts high sensitive chip and intelligent semiconductor sensors for more accurate measurement. Non-contacting blowing design which avoids the breeding of bacterium in the blowpipe, quick troubleshooting without pipeblowing and make the measurement healthier. Clear definition LCD color display, simple and easy to read accurate values, large fonts makes you can get the values at a glance. Equipped with three color detection indicators, the test results are clear at a glance, red represents drunken state, yellow represents drinking state, green represent non-drinking state. Built-in large capacity battery, USB quickly recharging design, break the traditional battery power supply, economical and practical to use. Wide applications, suitable for family dinner, company annual meeting, construction site, bus fleet, enterprise use. Specifications: Name: Alcohols Detector Sensors types: semiconductor Material: ABS Language: English, Japanese (optional) Battery: 1 * 3.7V, 150mAh battery (included) Preheating time: 10s Measuring ranges: 0-0.19%BAC; 0-0.95mg/L Measuring units: mg/lBrAC), %BAC, mg/100ml Input: 5V1A Interface: TYPE-C Item size: 105 * 30 * 17mm / 4.13 * 1.18 * 0.67in Package size: 120 * 45 * 32mm / 4.72 * 1.77 * 1.26in Package weight: 50g / 1.76ounce How to use the alcohol tester: Preheat: 1.Pre and hold the power button for 1 second, after a beep sound, the LCD screen of the tester will be activated 2.Preheat" characters appear on the display, and the numbers start to count down from 10 to 00. Notice: Since the surface of the sensor will be oxidized when the tester is not used for a long time, when the tester is taken out of the package for the first time or the tester is not used for a long time, the user needs to preheat the product several times as much as poible, and then perform the alcohol test testing method: 1.After "preheating" is completed, enter the "Blowing" state, the display shows the characters of blowing, and the number starts to count down from 10 to 00. 2.Blow air at any time of the countdown, after the machine senses the air, the buzzer "beep" will prompt to stop blowing. 3.Read the test results from the display of the tester. 4.If the alcohol concentration result is 0mg/L, the warning light will not light up 5.If the alcohol concentration is below the display range of the result, the "safe" characters will appear on the display and the green warning light will be on. Alcohol concentration>0mg/L BrAC Alcohol concentration